Simeus is totally correct.
I collect old photos and have since 1969.
I always reduce the size of the photo when putting it on line.
As Simeus notes, a reworked republican of an owned work is essentially a copyrightable piece of work. People committing fraud by rerepublication thereafter are stealing.
I reckon I have had about two dozen photos taken and reused- notably from the old WAF forum. One of a China Marine in a corduroy jacket seems especially popular.
On eBay I once bought an original Freikorps post card of a chap with a dog (complete with mailed message on back to a girl in Darmstadt). Bar-e or Bartko Rehrer (seller) has subsequently resold a reverse blank, cropped version of this image at least 5 times since. The last time was for well over $100. I complained and eBay ignored me.